/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:47:16,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:47:16,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:47:17,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:47:17,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:47:17,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:47:17,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:47:17,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:47:17,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:47:17,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:47:17,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:47:17,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:47:17,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:47:17,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:47:17,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:47:17,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:47:17,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:47:17,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:47:17,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:47:17,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:47:17,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:47:17,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:47:17,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:47:17,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:47:17,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:47:17,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:47:17,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:47:17,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:47:17,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:47:17,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:47:17,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:47:17,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:47:17,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:47:17,184 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:47:17,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:47:17,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:47:17,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:47:17,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:47:17,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:47:17,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:47:17,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:47:17,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:47:17,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:47:17,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:47:17,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:47:17,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:47:17,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:47:17,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:47:17,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:47:17,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:47:17,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:47:17,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:47:17,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:47:17,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:47:17,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:47:17,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:47:17,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:47:17,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:47:17,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:47:17,626 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:47:17,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2021-01-06 17:47:17,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/38f721b28/b8a91555a5f34997a8b5bcd3a642efec/FLAG50c0ea2fd [2021-01-06 17:47:18,412 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:47:18,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2021-01-06 17:47:18,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/38f721b28/b8a91555a5f34997a8b5bcd3a642efec/FLAG50c0ea2fd [2021-01-06 17:47:18,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/38f721b28/b8a91555a5f34997a8b5bcd3a642efec [2021-01-06 17:47:18,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:47:18,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:47:18,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:47:18,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:47:18,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:47:18,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:47:18" (1/1) ... [2021-01-06 17:47:18,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759ea46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:18, skipping insertion in model container [2021-01-06 17:47:18,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:47:18" (1/1) ... [2021-01-06 17:47:18,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:47:18,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:47:18,956 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:47:18,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:47:18,988 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:47:19,003 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:47:19,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:47:19,029 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:47:19,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19 WrapperNode [2021-01-06 17:47:19,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:47:19,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:47:19,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:47:19,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:47:19,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (1/1) ... [2021-01-06 17:47:19,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (1/1) ... [2021-01-06 17:47:19,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:47:19,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:47:19,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:47:19,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:47:19,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (1/1) ... [2021-01-06 17:47:19,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (1/1) ... [2021-01-06 17:47:19,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (1/1) ... [2021-01-06 17:47:19,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (1/1) ... [2021-01-06 17:47:19,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (1/1) ... [2021-01-06 17:47:19,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (1/1) ... [2021-01-06 17:47:19,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (1/1) ... [2021-01-06 17:47:19,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:47:19,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:47:19,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:47:19,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:47:19,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:47:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:47:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:47:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:47:19,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:47:19,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:47:19,596 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-01-06 17:47:19,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:47:19 BoogieIcfgContainer [2021-01-06 17:47:19,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:47:19,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:47:19,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:47:19,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:47:19,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:47:18" (1/3) ... [2021-01-06 17:47:19,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f15712e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:47:19, skipping insertion in model container [2021-01-06 17:47:19,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:47:19" (2/3) ... [2021-01-06 17:47:19,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f15712e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:47:19, skipping insertion in model container [2021-01-06 17:47:19,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:47:19" (3/3) ... [2021-01-06 17:47:19,614 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound5.c [2021-01-06 17:47:19,621 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:47:19,626 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:47:19,648 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:47:19,692 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:47:19,692 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:47:19,693 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:47:19,693 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:47:19,693 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:47:19,693 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:47:19,694 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:47:19,695 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:47:19,711 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-01-06 17:47:19,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:47:19,717 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:19,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:19,718 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:19,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:19,725 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-01-06 17:47:19,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:19,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38304491] [2021-01-06 17:47:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:47:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:19,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38304491] [2021-01-06 17:47:19,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:47:19,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:47:19,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585402376] [2021-01-06 17:47:19,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:47:19,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:19,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:47:19,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:47:19,934 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2021-01-06 17:47:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:19,968 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2021-01-06 17:47:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:47:19,969 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 17:47:19,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:19,988 INFO L225 Difference]: With dead ends: 83 [2021-01-06 17:47:19,988 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 17:47:19,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:47:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 17:47:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-01-06 17:47:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 17:47:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-01-06 17:47:20,043 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2021-01-06 17:47:20,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:20,044 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-01-06 17:47:20,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:47:20,044 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-01-06 17:47:20,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:47:20,044 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:20,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:20,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:47:20,045 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:20,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:20,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-01-06 17:47:20,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:20,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719699778] [2021-01-06 17:47:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:47:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:20,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719699778] [2021-01-06 17:47:20,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:47:20,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:47:20,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52622180] [2021-01-06 17:47:20,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:47:20,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:20,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:47:20,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:47:20,174 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2021-01-06 17:47:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:20,285 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-01-06 17:47:20,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:47:20,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 17:47:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:20,287 INFO L225 Difference]: With dead ends: 58 [2021-01-06 17:47:20,287 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 17:47:20,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:47:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 17:47:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2021-01-06 17:47:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:47:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-01-06 17:47:20,297 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2021-01-06 17:47:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:20,297 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-01-06 17:47:20,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:47:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-01-06 17:47:20,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:47:20,298 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:20,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:20,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:47:20,299 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-01-06 17:47:20,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:20,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839826895] [2021-01-06 17:47:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:47:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:20,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839826895] [2021-01-06 17:47:20,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:47:20,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:47:20,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504848996] [2021-01-06 17:47:20,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:47:20,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:20,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:47:20,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:47:20,390 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2021-01-06 17:47:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:20,502 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-01-06 17:47:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:47:20,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 17:47:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:20,504 INFO L225 Difference]: With dead ends: 56 [2021-01-06 17:47:20,504 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:47:20,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:47:20,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:47:20,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-01-06 17:47:20,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:47:20,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-01-06 17:47:20,514 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2021-01-06 17:47:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:20,515 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-01-06 17:47:20,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:47:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-01-06 17:47:20,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:47:20,516 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:20,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:20,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:47:20,516 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:20,517 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2021-01-06 17:47:20,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:20,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063308130] [2021-01-06 17:47:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:20,537 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:20,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628771545] [2021-01-06 17:47:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:47:20,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:47:20,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:20,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063308130] [2021-01-06 17:47:20,756 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:20,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628771545] [2021-01-06 17:47:20,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:47:20,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:47:20,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583901246] [2021-01-06 17:47:20,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:47:20,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:20,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:47:20,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:47:20,759 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2021-01-06 17:47:20,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:20,946 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2021-01-06 17:47:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:47:20,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:47:20,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:20,949 INFO L225 Difference]: With dead ends: 76 [2021-01-06 17:47:20,949 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:47:20,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:47:20,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:47:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2021-01-06 17:47:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-06 17:47:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-01-06 17:47:20,962 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2021-01-06 17:47:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:20,962 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-01-06 17:47:20,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:47:20,963 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-01-06 17:47:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:47:20,963 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:20,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:21,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:21,178 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:21,179 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2021-01-06 17:47:21,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:21,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148021335] [2021-01-06 17:47:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:21,199 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:21,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508630706] [2021-01-06 17:47:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:47:21,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:47:21,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:21,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148021335] [2021-01-06 17:47:21,578 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:21,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508630706] [2021-01-06 17:47:21,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:47:21,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 17:47:21,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419038835] [2021-01-06 17:47:21,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:47:21,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:21,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:47:21,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:47:21,581 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2021-01-06 17:47:22,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:22,009 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2021-01-06 17:47:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:47:22,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2021-01-06 17:47:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:22,013 INFO L225 Difference]: With dead ends: 67 [2021-01-06 17:47:22,013 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 17:47:22,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:47:22,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 17:47:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-01-06 17:47:22,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 17:47:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-01-06 17:47:22,035 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2021-01-06 17:47:22,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:22,036 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-01-06 17:47:22,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:47:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-01-06 17:47:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:47:22,039 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:22,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:22,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:22,254 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:22,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:22,256 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2021-01-06 17:47:22,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:22,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147480366] [2021-01-06 17:47:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:22,271 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:22,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990852122] [2021-01-06 17:47:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:47:22,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:47:22,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:22,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147480366] [2021-01-06 17:47:22,588 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:22,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990852122] [2021-01-06 17:47:22,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:22,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:47:22,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161276958] [2021-01-06 17:47:22,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:47:22,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:22,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:47:22,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:47:22,591 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 9 states. [2021-01-06 17:47:23,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:23,088 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2021-01-06 17:47:23,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:47:23,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2021-01-06 17:47:23,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:23,090 INFO L225 Difference]: With dead ends: 102 [2021-01-06 17:47:23,091 INFO L226 Difference]: Without dead ends: 65 [2021-01-06 17:47:23,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:47:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-06 17:47:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-01-06 17:47:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:47:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2021-01-06 17:47:23,125 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 22 [2021-01-06 17:47:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:23,126 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2021-01-06 17:47:23,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:47:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2021-01-06 17:47:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:47:23,128 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:23,128 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:23,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:23,344 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:23,345 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2021-01-06 17:47:23,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:23,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366553330] [2021-01-06 17:47:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:23,367 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:23,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128760087] [2021-01-06 17:47:23,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:23,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:47:23,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:47:23,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:47:23,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:23,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366553330] [2021-01-06 17:47:23,809 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:23,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128760087] [2021-01-06 17:47:23,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:23,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:47:23,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259483225] [2021-01-06 17:47:23,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:47:23,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:23,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:47:23,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:47:23,812 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 12 states. [2021-01-06 17:47:24,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:24,780 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2021-01-06 17:47:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:47:24,780 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2021-01-06 17:47:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:24,783 INFO L225 Difference]: With dead ends: 127 [2021-01-06 17:47:24,783 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 17:47:24,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:47:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 17:47:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2021-01-06 17:47:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-01-06 17:47:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2021-01-06 17:47:24,802 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 29 [2021-01-06 17:47:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:24,803 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2021-01-06 17:47:24,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:47:24,803 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2021-01-06 17:47:24,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:47:24,804 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:24,804 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:25,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:25,019 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:25,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:25,020 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2021-01-06 17:47:25,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:25,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879996884] [2021-01-06 17:47:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:25,035 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:25,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077864425] [2021-01-06 17:47:25,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:47:25,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:47:25,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:25,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879996884] [2021-01-06 17:47:25,442 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:25,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077864425] [2021-01-06 17:47:25,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:25,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:47:25,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040443230] [2021-01-06 17:47:25,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:47:25,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:25,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:47:25,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:47:25,446 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 10 states. [2021-01-06 17:47:26,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:26,109 INFO L93 Difference]: Finished difference Result 125 states and 144 transitions. [2021-01-06 17:47:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:47:26,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2021-01-06 17:47:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:26,111 INFO L225 Difference]: With dead ends: 125 [2021-01-06 17:47:26,112 INFO L226 Difference]: Without dead ends: 123 [2021-01-06 17:47:26,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:47:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-01-06 17:47:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2021-01-06 17:47:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-01-06 17:47:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2021-01-06 17:47:26,131 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 31 [2021-01-06 17:47:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:26,131 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2021-01-06 17:47:26,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:47:26,132 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2021-01-06 17:47:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:47:26,133 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:26,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:26,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:26,347 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:26,348 INFO L82 PathProgramCache]: Analyzing trace with hash -684568005, now seen corresponding path program 1 times [2021-01-06 17:47:26,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:26,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589207158] [2021-01-06 17:47:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:26,368 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:26,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910004036] [2021-01-06 17:47:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:47:26,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:47:26,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:26,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589207158] [2021-01-06 17:47:26,747 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:26,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910004036] [2021-01-06 17:47:26,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:26,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:47:26,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300479190] [2021-01-06 17:47:26,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:47:26,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:26,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:47:26,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:47:26,750 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand 10 states. [2021-01-06 17:47:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:27,271 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2021-01-06 17:47:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:47:27,271 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2021-01-06 17:47:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:27,272 INFO L225 Difference]: With dead ends: 133 [2021-01-06 17:47:27,272 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 17:47:27,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:47:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 17:47:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2021-01-06 17:47:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-01-06 17:47:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-01-06 17:47:27,294 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 33 [2021-01-06 17:47:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:27,295 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-01-06 17:47:27,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:47:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-01-06 17:47:27,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:47:27,296 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:27,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:27,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:27,512 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:27,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1455744328, now seen corresponding path program 1 times [2021-01-06 17:47:27,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:27,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601945778] [2021-01-06 17:47:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:27,526 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:27,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718415153] [2021-01-06 17:47:27,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:47:27,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:47:27,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:47:27,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601945778] [2021-01-06 17:47:27,846 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:27,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718415153] [2021-01-06 17:47:27,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:27,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:47:27,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827461453] [2021-01-06 17:47:27,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:47:27,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:27,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:47:27,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:47:27,848 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 10 states. [2021-01-06 17:47:28,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:47:28,723 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2021-01-06 17:47:28,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:47:28,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2021-01-06 17:47:28,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:47:28,725 INFO L225 Difference]: With dead ends: 148 [2021-01-06 17:47:28,725 INFO L226 Difference]: Without dead ends: 133 [2021-01-06 17:47:28,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:47:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-06 17:47:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 104. [2021-01-06 17:47:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-01-06 17:47:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2021-01-06 17:47:28,747 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 36 [2021-01-06 17:47:28,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:47:28,747 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2021-01-06 17:47:28,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:47:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2021-01-06 17:47:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:47:28,749 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:47:28,749 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:47:28,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:47:28,964 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:47:28,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:47:28,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1277177884, now seen corresponding path program 3 times [2021-01-06 17:47:28,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:47:28,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810435025] [2021-01-06 17:47:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:47:28,991 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:47:28,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928451681] [2021-01-06 17:47:28,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:47:29,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:47:29,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:47:29,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 17:47:29,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:47:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-06 17:47:37,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810435025] [2021-01-06 17:47:37,412 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:47:37,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928451681] [2021-01-06 17:47:37,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:47:37,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:47:37,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542768039] [2021-01-06 17:47:37,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:47:37,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:47:37,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:47:37,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=47, Unknown=4, NotChecked=0, Total=72 [2021-01-06 17:47:37,415 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand 9 states. [2021-01-06 17:48:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:21,048 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2021-01-06 17:48:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:48:21,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2021-01-06 17:48:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:21,051 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:48:21,051 INFO L226 Difference]: Without dead ends: 114 [2021-01-06 17:48:21,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=40, Invalid=85, Unknown=7, NotChecked=0, Total=132 [2021-01-06 17:48:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-01-06 17:48:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2021-01-06 17:48:21,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-01-06 17:48:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2021-01-06 17:48:21,080 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 36 [2021-01-06 17:48:21,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:21,081 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2021-01-06 17:48:21,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:48:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2021-01-06 17:48:21,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 17:48:21,089 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:21,089 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:21,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 17:48:21,291 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:21,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:21,292 INFO L82 PathProgramCache]: Analyzing trace with hash -642892963, now seen corresponding path program 2 times [2021-01-06 17:48:21,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:21,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041797889] [2021-01-06 17:48:21,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:21,302 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:21,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660835806] [2021-01-06 17:48:21,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:21,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:48:21,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:48:21,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2021-01-06 17:48:21,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:21,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041797889] [2021-01-06 17:48:21,821 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:21,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660835806] [2021-01-06 17:48:21,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:21,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:48:21,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383489405] [2021-01-06 17:48:21,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:48:21,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:21,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:48:21,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:48:21,826 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand 11 states. [2021-01-06 17:48:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:22,757 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2021-01-06 17:48:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:48:22,757 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2021-01-06 17:48:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:22,758 INFO L225 Difference]: With dead ends: 161 [2021-01-06 17:48:22,759 INFO L226 Difference]: Without dead ends: 125 [2021-01-06 17:48:22,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:48:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-01-06 17:48:22,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 112. [2021-01-06 17:48:22,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-01-06 17:48:22,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2021-01-06 17:48:22,772 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 38 [2021-01-06 17:48:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:22,773 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2021-01-06 17:48:22,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:48:22,773 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2021-01-06 17:48:22,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:48:22,774 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:22,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:22,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:22,989 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:22,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1707275894, now seen corresponding path program 3 times [2021-01-06 17:48:22,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:22,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638531133] [2021-01-06 17:48:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:23,013 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:23,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216249105] [2021-01-06 17:48:23,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:23,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:48:23,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:48:23,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 59 conjunts are in the unsatisfiable core [2021-01-06 17:48:23,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:23,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638531133] [2021-01-06 17:48:23,903 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:23,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216249105] [2021-01-06 17:48:23,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:23,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-01-06 17:48:23,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847189256] [2021-01-06 17:48:23,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 17:48:23,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:23,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 17:48:23,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:48:23,908 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand 16 states. [2021-01-06 17:48:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:25,866 INFO L93 Difference]: Finished difference Result 149 states and 173 transitions. [2021-01-06 17:48:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 17:48:25,867 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2021-01-06 17:48:25,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:25,868 INFO L225 Difference]: With dead ends: 149 [2021-01-06 17:48:25,868 INFO L226 Difference]: Without dead ends: 118 [2021-01-06 17:48:25,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2021-01-06 17:48:25,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-01-06 17:48:25,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2021-01-06 17:48:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-06 17:48:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2021-01-06 17:48:25,882 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 44 [2021-01-06 17:48:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:25,883 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2021-01-06 17:48:25,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 17:48:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2021-01-06 17:48:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:48:25,884 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:25,884 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:26,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:26,092 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:26,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:26,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2100302904, now seen corresponding path program 1 times [2021-01-06 17:48:26,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:26,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525703745] [2021-01-06 17:48:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:26,104 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:26,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479138828] [2021-01-06 17:48:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:48:26,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:48:26,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:26,235 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:48:26,238 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:48:26,243 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:48:26,259 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:48:26,263 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:48:26,271 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:48:26,276 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 17:48:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-06 17:48:26,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525703745] [2021-01-06 17:48:26,347 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:26,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479138828] [2021-01-06 17:48:26,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:26,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:48:26,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416048485] [2021-01-06 17:48:26,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:48:26,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:26,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:48:26,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:48:26,350 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 5 states. [2021-01-06 17:48:26,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:26,440 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2021-01-06 17:48:26,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:48:26,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-01-06 17:48:26,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:26,442 INFO L225 Difference]: With dead ends: 140 [2021-01-06 17:48:26,442 INFO L226 Difference]: Without dead ends: 98 [2021-01-06 17:48:26,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:48:26,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-06 17:48:26,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2021-01-06 17:48:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 17:48:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2021-01-06 17:48:26,454 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 44 [2021-01-06 17:48:26,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:26,454 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2021-01-06 17:48:26,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:48:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2021-01-06 17:48:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:48:26,455 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:26,455 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:26,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:48:26,669 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:26,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:26,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1027491960, now seen corresponding path program 4 times [2021-01-06 17:48:26,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:26,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598131585] [2021-01-06 17:48:26,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:26,681 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:26,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321166692] [2021-01-06 17:48:26,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:26,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:48:26,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:48:26,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 55 conjunts are in the unsatisfiable core [2021-01-06 17:48:26,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:27,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598131585] [2021-01-06 17:48:27,514 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:27,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321166692] [2021-01-06 17:48:27,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:27,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:48:27,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928717604] [2021-01-06 17:48:27,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:48:27,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:27,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:48:27,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:48:27,516 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand 14 states. [2021-01-06 17:48:28,371 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-01-06 17:48:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:29,074 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2021-01-06 17:48:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:48:29,075 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2021-01-06 17:48:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:29,076 INFO L225 Difference]: With dead ends: 146 [2021-01-06 17:48:29,076 INFO L226 Difference]: Without dead ends: 108 [2021-01-06 17:48:29,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-01-06 17:48:29,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-01-06 17:48:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2021-01-06 17:48:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 17:48:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-01-06 17:48:29,089 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 45 [2021-01-06 17:48:29,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:29,090 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-01-06 17:48:29,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:48:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-01-06 17:48:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:48:29,090 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:29,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:29,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:48:29,304 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash -14469331, now seen corresponding path program 2 times [2021-01-06 17:48:29,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:29,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581924859] [2021-01-06 17:48:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:29,317 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:29,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549602328] [2021-01-06 17:48:29,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:29,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:48:29,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:48:29,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 61 conjunts are in the unsatisfiable core [2021-01-06 17:48:29,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:48:30,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581924859] [2021-01-06 17:48:30,550 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:30,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549602328] [2021-01-06 17:48:30,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:48:30,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-01-06 17:48:30,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975874760] [2021-01-06 17:48:30,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:48:30,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:48:30,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:48:30,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:48:30,553 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 17 states. [2021-01-06 17:48:32,345 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2021-01-06 17:48:33,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:48:33,087 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2021-01-06 17:48:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-06 17:48:33,088 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2021-01-06 17:48:33,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:48:33,088 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:48:33,089 INFO L226 Difference]: Without dead ends: 94 [2021-01-06 17:48:33,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 17:48:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-01-06 17:48:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-01-06 17:48:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 17:48:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-01-06 17:48:33,102 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 46 [2021-01-06 17:48:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:48:33,103 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-01-06 17:48:33,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:48:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-01-06 17:48:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 17:48:33,104 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:48:33,104 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:48:33,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:48:33,319 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:48:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:48:33,319 INFO L82 PathProgramCache]: Analyzing trace with hash -422546789, now seen corresponding path program 3 times [2021-01-06 17:48:33,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:48:33,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235959635] [2021-01-06 17:48:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:48:33,330 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:48:33,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419312925] [2021-01-06 17:48:33,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:33,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:48:33,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:48:33,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 47 conjunts are in the unsatisfiable core [2021-01-06 17:48:33,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:48:35,825 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 25 [2021-01-06 17:48:35,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235959635] [2021-01-06 17:48:35,960 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:48:35,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419312925] [2021-01-06 17:48:35,960 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:48:35,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:48:35,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:48:35,961 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:48:35,961 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:48:36,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:48:36,197 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:48:36,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:48:36 BoogieIcfgContainer [2021-01-06 17:48:36,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:48:36,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:48:36,199 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:48:36,199 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:48:36,199 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:47:19" (3/4) ... [2021-01-06 17:48:36,203 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:48:36,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:48:36,208 INFO L168 Benchmark]: Toolchain (without parser) took 77436.96 ms. Allocated memory was 160.4 MB in the beginning and 232.8 MB in the end (delta: 72.4 MB). Free memory was 135.3 MB in the beginning and 151.2 MB in the end (delta: -15.9 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:36,208 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 160.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:48:36,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.56 ms. Allocated memory is still 160.4 MB. Free memory was 135.1 MB in the beginning and 125.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:36,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.48 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:36,212 INFO L168 Benchmark]: Boogie Preprocessor took 27.77 ms. Allocated memory is still 160.4 MB. Free memory was 123.4 MB in the beginning and 122.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:36,212 INFO L168 Benchmark]: RCFGBuilder took 494.51 ms. Allocated memory is still 160.4 MB. Free memory was 122.2 MB in the beginning and 142.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:36,218 INFO L168 Benchmark]: TraceAbstraction took 76598.46 ms. Allocated memory was 160.4 MB in the beginning and 232.8 MB in the end (delta: 72.4 MB). Free memory was 142.0 MB in the beginning and 151.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 63.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:48:36,219 INFO L168 Benchmark]: Witness Printer took 4.86 ms. Allocated memory is still 232.8 MB. Free memory was 151.7 MB in the beginning and 151.2 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:48:36,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 160.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.56 ms. Allocated memory is still 160.4 MB. Free memory was 135.1 MB in the beginning and 125.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.48 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.77 ms. Allocated memory is still 160.4 MB. Free memory was 123.4 MB in the beginning and 122.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 494.51 ms. Allocated memory is still 160.4 MB. Free memory was 122.2 MB in the beginning and 142.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 76598.46 ms. Allocated memory was 160.4 MB in the beginning and 232.8 MB in the end (delta: 72.4 MB). Free memory was 142.0 MB in the beginning and 151.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 63.1 MB. Max. memory is 8.0 GB. * Witness Printer took 4.86 ms. Allocated memory is still 232.8 MB. Free memory was 151.7 MB in the beginning and 151.2 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] unsigned int A, B; [L24] long long r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND TRUE !(r >= d) [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 76.4s, OverallIterations: 17, TraceHistogramMax: 4, AutomataDifference: 55.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 442 SDtfs, 1781 SDslu, 1286 SDs, 0 SdLazy, 2866 SolverSat, 631 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 36.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 542 GetRequests, 317 SyntacticMatches, 3 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 28.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 161 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 13.6s InterpolantComputationTime, 472 NumberOfCodeBlocks, 458 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 456 ConstructedInterpolants, 0 QuantifiedInterpolants, 277004 SizeOfPredicates, 144 NumberOfNonLiveVariables, 1627 ConjunctsInSsa, 455 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 55/260 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...